Bdellovibrio bacteriovorus to control Escherichia coli on meat matrices

Bdellovibrio bacteriovorus is a predator micro-organism towards other Gram-negative bacteria. We tested B. bacteriovorus to control Escherichia coli growth on chicken slices and canned beef. Moreover, we analysed B. bacteriovorus's lytic ability on eight toxigenic or multidrug-resistant E. coli strains. In chicken slices, the predator induced the highest prey reduction (4.3 log) respect to control at 6 h. In canned beef, the predator induced the highest prey reduction (2.1 log) respect to control at 6 h. Moreover, B. bacteriovorus showed lytic ability towards all tested E. coli strains. B. bacteriovorus could control E. coli and other pathogenic and spoilage bacteria in those meat-based foods that have a shelf life <10 days. It could integrate modified atmosphere packaging (MAP) to prolong the shelf life and improve the safety of pre-packed fresh meat, meat preparations and meat products. In future applications on meat-based foods, B. bacteriovorus could also minimise the use of additives

Spindle cell oncocytoma of the adenohypophysis in a woman: a case report and review of the literature

<p>Abstract</p> <p>Introduction</p> <p>Spindle cell oncocytoma of the adenohypophysis is a rare tumour recently reported by Roncaroli <it>et al. </it>in 2002. This tumour is considered a grade I tumour by the World Health Organization.</p> <p>Case presentation</p> <p>We describe what is, to the best of our knowledge, the 14th case of its kind in the literature. A 45-year-old African woman presented clinical and radiological findings related to a nonfunctioning pituitary adenoma. The diagnosis was made on the basis of histological and immunohistochemical findings.</p> <p>Conclusion</p> <p>The purpose of this work is to report a rare pituitary tumour and to describe its histological and immunohistochemical features, which were characterized by the expression of thyroid transcription factor 1 antigen by tumour cells. This fact could support the theory of a possible common origin of these tumours in pituicytomas. In fact, thyroid transcription factor 1 is considered to be a specific marker of pituicytes.</p

Amoebome Iléocaecal : un cas diagnostiqué par l'anatomie pathologique et la biologie moléculaire

International audienceColonic ameboma is a rare benign inflammatory tumor due to the infection by Entamoeba histolytica and poses frequently the problem of colon cancer. We report a case of a 52-year-old patient who pre-sented a cecal amoeboma revealed by a painful mass in the right iliac fossa. Radiologic and endoscopic examinations depicted a parietal thickening of the right colon and the cecum. A presumptive diagnosis of colon cancer was firstly discussed. Confirmation of ameboma was made on patholo-gical examination, PCR and serology.L'amoebome colique est une tumeur inflammatoire bénigne faisant suite à l'infection par Entamoeba histolytica. Il pose souvent un problème de diagnostic différentiel avec le cancer colique. Nous rapportons l'observation d'une patiente de 52 ans qui a présenté un cas d'amoebome iléo-caecal révélé par une masse douloureuse de la fosse iliaque droite. Les examens radiologiques et endoscopiques ont montré un épaississement pariétal du colon droit et du caecum. Un cancer colique fût suspecté. Le diagnostic d'amoebome a été porté sur la pièce d'exérèse par l'anatomie pathologique, la PCR et la sérologie